Last night I hadn't got access to a photo of the bridge with it's catenary supports in place. (SWMBO was playing games on facebook or something equally important). Anyway here is the photo that I wanted to upload. Copyright Robert Jackson but used with permission. It shows the arches on the right. I hope this makes it a bit clearer what we are trying to achieve. It also shows the longest OHLE gantry in the Lancaster area. (There were some longer ones in Morecambe station). Fortunately